A new benzimidazoles derivatives of 8-hydroxyquinoline have been
synthesized and its chemical structure was elucidated and confirmed
using different spectral methods such as 1H and 13C NMR spectroscopy.
The inhibitive action of
5-((2-phenylbenzimidazol-1-yl)-methyl)-quinolin-8-ol (Q-H) against the
corrosion of mild steel in 1.0 M hydrochloric acid solution were
investigated at different temperatures by a series of known techniques
such weight loss and electrochemical measurements. In order to improve
inhibition property, the effect of substitution onbenzimidazoles
derivatives of 8-hydroxyquinoline towards mild steel corrosion
inhibition in hydrochloric acid medium was also studied. It was found
that the studied compounds exhibit a very good performance as inhibitors
for mild steel corrosion in 1.0 M hydrochloric acid (HCl). Results show
that the inhibition efficiency increases with decreasing temperature and
increasing concentration of inhibitor's.